Pin Cython to 3.1.x instead of 3.1.0 as requested (#530).

Author: anthony-tuininga

doc/src/release_notes.rst

@@ -43,6 +43,8 @@ Common Changes
     (`issue 512 <https://github.com/oracle/python-oracledb/issues/512>`__).
 #)  Fixed bug when attempting to execute an empty statement
     (`issue 525 <https://github.com/oracle/python-oracledb/issues/525>`__).
+#)  Pin Cython to 3.1.x instead of 3.1.0 as requested
+    (`issue 530 <https://github.com/oracle/python-oracledb/issues/530>`__).
 #)  API documentation is now generated from the source code.
 #)  Internal change: typing_extensions is now a dependency.
 

pyproject.toml

@@ -2,7 +2,7 @@
 requires = [
     "setuptools >= 77.0.0",
     "wheel",
-    "cython == 3.1",
+    "cython ~= 3.1",
 ]
 build-backend = "setuptools.build_meta"